H-beam and method for constructing concrete form using h-beam and non-metallic sheathing board

ABSTRACT

Disclosed are an H-beam and a method for constructing a concrete form using the H-beam and non-metallic sheathing board. An H-beam includes a middle support part interposed between two adjacent sheathing boards so that lateral surfaces of edge portions of the two adjacent sheathing boards respectively contact both lateral surfaces of the middle support part and are supported by the middle support part, and edge connection parts bent perpendicular from both side end portions of the middle support part and extending forward and backward in a longitudinal direction in order to cover front and rear surfaces of the edge portions of the sheathing boards and support the same. Accordingly, connection of the sheathing boards can be achieved rapidly and easily, construction processes are simplified, and work time is remarkably reduced. As a result, work efficiency is improved.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an H-beam for connecting non-metallic(e.g., foams such as Styrofoam and plastics) sheathing boards havingheat-insulating properties and used as inner and outer insulators forconstruction without breaking up after pouring concrete, and a methodfor constructing a concrete form using the H-beam.

2. Description of the Related Art

In general, construction materials, such as a plurality of sheathingboards functioning as form boards for walls defining an outer appearanceof buildings and flat ties functioning as support bars by being embeddedin concrete poured between the sheathing boards, are used forconstruction. In addition, horizontal support bars (pipes) are mountedto hooks connected by wedges at end portions of the flat ties exposed tothe outside of the sheathing boards in order to endure a concretepressure, or back-up plates for covering and reinforcing connectionportions between the consecutively arranged sheathing boards are mountedby means of the flat ties.

Schematically describing an exemplary conventional process of formingwalls of a building, a plurality of sheathing boards spaced a certaindistance apart from each other in a width direction are consecutivelyarranged in a longitudinal direction while standing upright, and thenconcrete is poured into the space between the sheathing boards andcured, thereby constructing the upright walls.

A process of forming laminated plates (slabs) on the top of the uprightwalls includes disposing layers of wood horizontally on the top of theupright walls, disposing sheets of plywood on the layers of wood andsecuring the same using nails, disposing heat-insulating (dustproof)Styrofoam on the sheets of plywood, and removing the layers of wood andsheets of plywood after pouring concrete.

When the sheathing boards are consecutively arranged in the longitudinaldirection, the lateral end portions of the sheathing boards areconnected to each other using, for example, wires so as to extend thewalls in the longitudinal direction.

However, in such a conventional process of extending the sheathingboards in the longitudinal direction, because an additional connectionmember for connecting the sheathing boards is not provided, constructionprocesses including wire connection become complicated, and wireconnection does not guarantee firmness of the sheathing boards, whichmay cause a problem such that the sheathing boards connected in thelongitudinal direction break due to a load of concrete poured betweenthe sheathing boards.

SUMMARY OF THE INVENTION

Therefore, it is an object of the present invention to provide an H-beamand a method for constructing a concrete form using the H-beam andnon-metallic sheathing board, in which the H-beams connect edge portionsof a plurality of sheathing boards spaced a certain distance apart fromeach other in a width direction to receive concrete poured therebetweenand consecutively arranged in a longitudinal direction while standingupright so as to extend the sheathing boards for upright walls straightin the longitudinal direction, and also connect edge portions ofsheathing boards for laminated plates (slabs) disposed horizontally onthe top of the sheathing boards for upright walls so as to extend thesheathing boards horizontally, thereby achieving connection of thesheathing boards rapidly and easily, simplifying construction processes,remarkably reducing work time, and as a result improving workefficiency.

It is another object of the present invention to provide an H-beam and amethod for constructing a concrete form using the H-beam andnon-metallic sheathing board, by which edge portions of the sheathingboards are firmly secured, the sheathing boards can stably endure a loadof concrete, and accordingly work stability and resultant reliabilityare improved.

In accordance with an aspect of the present invention, the above andother objects can be accomplished by the provision of an H-beamconfigured to connect edge portions of a plurality of sheathing boardsspaced a certain distance apart from each other in a width direction toform a space therebetween to receive concrete poured therein andconsecutively arranged in a longitudinal direction while standingupright so as to extend the sheathing boards straight, the H-beamcomprising: a middle support part interposed between two adjacentsheathing boards so that lateral surfaces of the edge portions of thetwo adjacent sheathing boards respectively contact both lateral surfacesof the middle support part and are supported by the middle support part;and edge connection parts bent perpendicular from both side end portionsof the middle support part and extending forward and backward in thelongitudinal direction in order to cover front and rear surfaces of theedge portions of the sheathing boards and support the same.

As is apparent from the above description, the H-beams according to thepresent invention connect the edge portions of a plurality of sheathingboards which are spaced a certain distance apart from each other in thewidth direction to receive the concrete poured therebetween and areconsecutively arranged in the longitudinal direction while standingupright so as to extend the sheathing boards for upright walls straightin the longitudinal direction, and also connect the edge portions of thesheathing boards for laminated plates (slabs) disposed horizontally onthe top of the sheathing boards for upright walls so as to extend thesheathing boards horizontally. Accordingly, since connection of thesheathing boards can be achieved rapidly and easily, constructionprocesses are simplified and work time is remarkably reduced, whichresults in improvement in work efficiency.

Further, in the case in which the sheathing boards made of Styrofoam areused, the sheathing boards can be used as inner and outer insulators forbuildings without breaking up after pouring concrete, thereby remarkablyreducing construction processes.

Further, since the edge portions of the sheathing boards are firmlysecured, the sheathing boards can stably endure a load of concrete, andaccordingly work stability and resultant reliability are improved.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and other advantages of thepresent invention will be more clearly understood from the followingdetailed description taken in conjunction with the accompanyingdrawings, in which:

FIG. 1 is a perspective view illustrating an H-beam according to oneembodiment of the present invention;

FIG. 2 is a schematic perspective view illustrating a process ofconstructing sheathing boards using an H-beam according to oneembodiment of the present invention;

FIG. 3 is a schematic cross-sectional view illustrating a process ofconstructing sheathing boards using an H-beam according to oneembodiment of the present invention;

FIG. 4 is a schematic cross-sectional view illustrating an H-beamaccording to another embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view illustrating a constructionstate of sheathing boards for slabs using an H-beam according to anotherembodiment of the present invention; and

FIG. 6 is a perspective view illustrating an example of sheathing boardswhich can be used in the embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, preferred embodiments of the present invention will bedescribed in detail with reference to the annexed drawings.

As shown in FIGS. 1 through 3, an H-beam according to one embodiment ofthe present invention functions to connect edge portions of a pluralityof sheathing boards 10 which are spaced a certain distance apart fromeach other in a width direction to define a space therebetween toreceive the poured concrete therein and are consecutively arranged in alongitudinal direction while standing upright, thereby extending thesheathing boards 10 for upright walls straight in the longitudinaldirection.

The H-beam 30 includes a middle support part 32 interposed between twoadjacent sheathing boards 10 so that lateral surfaces of the edgeportions of the two adjacent sheathing boards 10 respectively contactboth lateral surfaces of the middle support part 32 and are supported bythe middle support part 32, and edge connection parts 33 bentperpendicular from both side end portions of the middle support part 32and extending forward and backward in the longitudinal direction inorder to cover front and rear surfaces of the edge portions of the twoadjacent sheathing boards 10 and support the same.

The edge portion of the sheathing board 10 covered by the edgeconnection parts 33 is formed with a concave recess 12 (refer to FIG. 6)by which the edge connection parts 33 are positioned on the same planeas the front and rear surfaces of the sheathing board 10. The edgeconnection parts 33 have an interval in the width direction, which isequal to a thickness of the edge portion of the sheathing board 10.

The edge portion of the sheathing board 10 contacting the middle supportpart 32 has slanted surfaces 13 formed at front and rear cornersthereof. Corresponding to the slanted surfaces 13 of the sheathing board10, the H-beam 30 also has slanted surfaces 34 formed at inner cornersat which the middle support part 32 and the edge connection parts 33adjoin so as to closely contact the slanted surfaces 13 of the sheathingboard 10.

A through-hole 12 a (refer to FIG. 6) is formed at the concave recess 12of the edge portion of the sheathing board 10, and an additionalsecuring pin 55 is fitted through the through-hole 12 a. The edgeconnection parts 33 opposing each other in the width direction arefowled with pin holes 33 a aligned in the width direction. In the statein which the pin holes 33 a of the edge connection parts 33 are alignedwith the through-hole 12 a of the edge portion of the sheathing board 10interposed between the two opposing edge connection parts 33, thesecuring pin 55 is fitted through the pin holes 33 a and thethrough-hole 12 a, thereby securing the sheathing board 10 to the edgeconnection parts 33.

The securing pin 55 may be formed in a long bar shape having a functionof connecting the sheathing board 10 and the edge connection parts 33after fitted through the pin holes 33 a and the through-hole 12 a, andmay be made of a PVC material.

A flat tie 20 is arranged perpendicular to the edge portions of thesheathing boards 10 across the pair of sheathing boards 10 spaced apartfrom each other in the width direction. The middle support part 32 isformed with a tie receiving groove 31 in which the flat tie 20 isinserted.

The flat tie 20 arranged across the pair of sheathing boards 10 spacedapart from each other in the width direction is provided in plural. Theconcave recess 12 of the sheathing board 10 is formed with a T-shapedtie slit 12 b (refer to FIG. 6) which one of the flat ties 20penetrates. Each of the edge connection parts 33 has a cut portion 33 bcut away from a distal end portion thereof corresponding to the tie slit12 b, so that the flat tie 20 penetrates the cut portion 33 b.

The cut portion 33 b has an opened top so as not to interrupt upwardmovement of the flat tie 20 when cutting end portions of the flat tie 20fitted through the tie slit 12 b of the sheathing board 10 by shakingthe end portions of the flat tie 20 up and down after pouring concrete,and a support step 33 c formed at a bottom thereof to support a bottomsurface of the flat tie 20.

The edge connection parts 33 have slanted guide surfaces 33 d formed atinner corners of the distal end portions thereof so as to guide the edgeportion of the sheathing board 10 to be smoothly fitted into the spacebetween the edge connection parts 33.

As shown in FIGS. 4 and 5, an H-beam 35 according to another embodimentof the present invention functions to connect edge portions of sheathingboards 15 for slabs disposed horizontally on the top of the sheathingboards 10 for upright walls so as to extend the sheathing boards 10 and15 horizontally, and also functions to connect the sheathing boards 15to layers of wood 57 disposed beneath the sheathing boards 15 and heldup by supports 56 so as to firmly secure the sheathing boards 15.

The H-beam 35 includes a middle support part 35 a interposed between twoadjacent sheathing boards 15 so that lateral surfaces of the edgeportions of the two adjacent sheathing boards 15 respectively contactboth lateral surfaces of the middle support part 35 a and are supportedby the middle support part 35 a, edge connection parts 35 b bentperpendicular from top and bottom portions of the middle support part 35a and extending forward and backward in the longitudinal direction inorder to cover top and bottom surfaces of the edge portions of the twoadjacent sheathing boards 15 and support the same, and a nail hole 35 cformed vertically through the middle support part 35 a, through which anadditional nail 58 is driven into the layers of wood 57 disposed beneaththe H-beam 35.

The H-beam 35 further includes a hitting space 35 d formed above thenail hole 35 c so as to allow a user to hit the nail 58 using a hammeror the like.

Non-described reference numeral 40 refers to a corner bar for connectingthe sheathing board 10 for upright walls and the sheathing board 15 forslabs perpendicular to each other.

As shown in FIG. 2, each of the flat ties 20 has wedge holes 21 a formedat both end portions thereof exposed to the outside of the sheathingboard 10, and horizontal support bars (not shown) may be mounted toadditional hooks (not shown) connected by wedges (not shown) through thewedge holes 21 a.

Herein, additional square wooden beams (not shown) for supporting thehorizontal support bars may be arranged in the space between thehorizontal support bars and the sheathing boards 10.

Alternatively, as shown in FIG. 2, before mounting the horizontalsupport bars, additional back-up plates 54 for reinforcing connectionportions between the consecutively arranged sheathing boards 10 may bemounted through wedge holes 21 a formed at both end portions of the flatties 20 exposed to the outside of the sheathing boards 10.

According to a method for constructing the concrete form using theH-beams according to the present invention constituted as above, theH-beams 30 for connecting the sheathing boards 10 for upright walls areprepared.

Next, the sheathing boards 10 spaced a certain distance apart from eachother in the width direction are consecutively arranged in thelongitudinal direction while standing upright.

At this time, the edge portions of each two adjacent sheathing boards 10arranged in the longitudinal direction are inserted into the spacebetween the edge connection parts 33 of the H-beam 30 interposedtherebetween, and accordingly the sheathing boards 10 are connected bythe H-beams 30.

The H-beams 30 and the edge portions of the sheathing boards 10 aresecured by the securing pins 55.

Next, the flat ties 20 are fitted through the sheathing boards 10 spacedapart from each other in the width direction so as to maintain thepredetermined interval in the width direction between the sheathingboards 10, thereby completing construction of the sheathing boards 10for upright walls.

On the other hand, in order to construct slabs, the H-beams 35 forconnecting the sheathing boards 15 for slabs are prepared.

Next, the sheathing boards 15 for slabs are horizontally disposed on thetop of the sheathing boards 10 for upright walls, and the edge portionsof each two adjacent sheathing boards 15 for slabs are connected by theH-beams 35 for slabs, thereby extending the sheathing boards 15horizontally.

The H-beams 35 and the edge portions of the sheathing boards 15 forslabs are also secured by the securing pins 55.

Next, the layers of wood 57 disposed beneath the sheathing boards 15 andheld up by the supports 56 and the H-beams 35 for slabs are secured toeach other by the nails 58, thereby completing construction of thesheathing boards 15 for slabs.

In addition, the back-up plates 54 are mounted through the wedge holes21 a formed at both end portions of the flat ties 20 exposed to theoutside of the sheathing boards 10 for upright walls, and the horizontalsupport bars are mounted by connecting the hooks.

In this state, concrete is poured into the space between the sheathingboards 10 for upright walls and onto the sheathing boards 15 for slabsand is cured, thereby completing construction of upright walls and slabsfor buildings.

As described above, the H-beams according to the present inventionconnect the edge portions of a plurality of sheathing boards spaced acertain distance apart from each other in the width direction to receivethe concrete poured therebetween and consecutively arranged in thelongitudinal direction while standing upright so as to extend thesheathing boards for upright walls straight in the longitudinaldirection, and also connect the edge portions of the sheathing boardsfor laminated plates (slabs) disposed horizontally on the top of thesheathing boards for upright walls so as to extend the sheathing boardshorizontally. Accordingly, since connection of the sheathing boards canbe achieved rapidly and easily, construction processes are simplifiedand work time is remarkably reduced, which results in improvement inwork efficiency. Further, since the edge portions of the sheathingboards are thinly secured, the sheathing boards can stably endure a loadof concrete, and accordingly work stability and resultant reliabilityare improved.

Although the preferred embodiments of the present invention have beendisclosed for illustrative purposes, those skilled in the art willappreciate that various modifications, additions and substitutions arepossible, without departing from the scope and spirit of the inventionas disclosed in the accompanying claims.

What is claimed is:
 1. An H-beam configured to connect edge portions of a plurality of sheathing boards spaced a certain distance apart from each other in a width direction to form a space therebetween to receive concrete poured therein and consecutively arranged in a longitudinal direction while standing upright so as to extend the sheathing boards straight, the H-beam comprising: a middle support part interposed between two adjacent sheathing boards so that lateral surfaces of the edge portions of the two adjacent sheathing boards respectively contact both lateral surfaces of the middle support part and are supported by the middle support part; and edge connection parts bent perpendicular from both side end portions of the middle support part and extending forward and backward in the longitudinal direction in order to cover front and rear surfaces of the edge portions of the sheathing boards and support the same, wherein, with respect to a flat tie arranged perpendicular to the edge portions of the sheathing boards across a pair of sheathing boards spaced apart from each other in the width direction, the middle support part is formed with a tie receiving groove to receive the flat tie inserted therein, the flat tie arranged across the sheathing boards in the width direction is provided in plural, and with respect to a tie slit formed at a concave recess of the sheathing board, which one of the flat ties penetrates, each of the edge connection parts has a cut portion cut away from a distal end portion thereof corresponding to the tie slit, so that the flat tie penetrates the cut portion.
 2. The H-beam according to claim 1, wherein, with respect to a concave recess formed at the edge portion of the sheathing board covered by the edge connection parts so as to allow the edge connection parts to be positioned on the same plane as front and rear surfaces of the sheathing board, the edge connection parts have an interval in the width direction, the interval being equal to a thickness of the edge portion of the sheathing board.
 3. The H-beam according to claim 1, wherein, with respect to slanted surfaces formed at front and rear corners of the edge portion of the sheathing board contacting the middle support part, the H-beam has slanted surfaces corresponding to the slanted surfaces of the sheathing board, the slanted surfaces of the H-beam being formed at corners at which the middle support part and the edge connection parts adjoin.
 4. The H-beam according to claim 1, wherein, with respect to a through-hole formed at the edge portion of the sheathing board and an additional securing pin fitted through the through-hole, the edge connection parts opposing each other in the width direction are formed with pin holes aligned in the width direction so that, in the state in which the pin holes are aligned with the through-hole of the edge portion of the sheathing board interposed between the edge connection parts, the securing pin is fitted through the pin holes and the through-hole in order to secure the sheathing board to the edge connection parts.
 5. The H-beam according to claim 1, wherein the cut portion has an opened top so as not to interrupt upward movement of the flat tie when cutting end portions of the flat tie penetrating the tie slit of the sheathing board by shaking the end portions of the flat tie up and down after pouring concrete, and a support step formed at a bottom thereof to support a bottom surface of the flat tie.
 6. The H-beam according to claim 1, wherein the edge connection parts have slanted guide surfaces formed at inner corners of distal end portions thereof so as to guide the edge portion of the sheathing board to be smoothly fitted into a space between the edge connection parts.
 7. An H-beam configured to connect edge portions of sheathing boards for slabs disposed horizontally on a top of sheathing boards for upright walls so as to extend the sheathing boards horizontally and to connect the sheathing boards to layers of wood disposed beneath the sheathing boards and held up by supports, the H-beam comprising: a middle support part interposed between two adjacent sheathing boards so that lateral surfaces of the edge portions of the two adjacent sheathing boards respectively contact both lateral surfaces of the middle support part and are supported by the middle support part; edge connection parts bent perpendicular from top and bottom portions of the middle support part and extending forward and backward in a longitudinal direction in order to cover top and bottom surfaces of the edge portions of the sheathing boards and support the same; and a nail hole formed vertically through the middle support part, through which an additional nail is driven into the layers of wood disposed beneath the H-beam from a hitting space, wherein, with respect to a through-hole formed at the edge portion of the sheathing board and an additional securing pin fitted through the through-hole, the edge connection parts opposing each other in the width direction are formed with pin holes aligned in the width direction so that, in the state in which the pin holes are aligned with the through-hole of the edge portion of the sheathing board interposed between the edge connection parts, the securing pin is fitted through the pin holes and the through-hole in order to secure the sheathing board to the edge connection parts.
 8. A method for constructing a concrete form using an H-beam comprising: preparing H-beams for connecting sheathing boards for upright walls, each of the H-beams including a middle support part interposed between two adjacent sheathing boards so that lateral surfaces of edge portions of the two adjacent sheathing boards respectively contact both lateral surfaces of the middle support part and are supported by the middle support part, and edge connection parts bent perpendicular from both side end portions of the middle support part and extending forward and backward in a longitudinal direction in order to cover front and rear surfaces of the edge portions of the sheathing boards and support the same, wherein, with respect to a flat tie arranged perpendicular to the edge portions of the sheathing boards across a pair of sheathing boards spaced apart from each other in a width direction, the middle support part is formed with a tie receiving groove to receive the flat tie inserted therein, the flat tie arranged across the sheathing boards in the width direction is provided in plural, and, with respect to a tie slit formed at a concave recess of the sheathing board, which one of the flat ties penetrates, each of the edge connection parts has a cut portion cut away from a distal end portion thereof corresponding to the tie slit, so that the flat tie penetrates the cut portion; arranging a plurality of sheathing boards to be spaced a certain distance apart from each other in the width direction and extend in the longitudinal direction while standing upright; connecting the sheathing boards using the H-beams such that edge portions of each two adjacent sheathing boards extending in the longitudinal direction are inserted into a space between edge connection parts of the H-beams; and fitting flat ties through the sheathing boards arranged in the width direction so as to maintain a predetermined interval in the width direction between the sheathing boards.
 9. The method according to claim 8, further comprising: preparing H-beams for connecting sheathing boards for slabs; connecting edge portions of each two adjacent sheathing boards for slabs disposed horizontally on a top of the sheathing boards for upright walls using the H-beams for slabs so as to extend the sheathing boards horizontally; and securing layers of wood disposed beneath the sheathing boards and held up by supports and the H-beams for slabs to each other by nails. 